- Brand
- Penlog
- Category
- Productivity
- Primary Subcategory
- Notes & Personal Knowledge Bases
Integration details
Description
Penlog turns your handwritten Apple Pencil journal into structured data you can work with in ChatGPT. Ask what you wrote on a given day, search your pages by topic, and pull up your open tasks with their current status. You can also add a task or mark one done, and it appears on your handwritten page and syncs through to Notion. Write by hand, then work with everything you wrote.
- Integration type
- Plugin
- Verification status
- Not applicable
- Platform
- ChatGPT
- Primary Subcategory
- Notes & Personal Knowledge Bases
- Secondary Subcategories
- None listed
- Brand
- Penlog
- Access
- Account required
- First tracked
- 2026-10-02
- Tool count
- 8
- Market
- US
The Primary Subcategory used for this profile’s headline score.
Other Subcategories where the Integration is listed.
Your score is coming
ChatGPT now suggests Plugins on its own when they match a user's request.Your Plugin Discovery Score measures how often yours appears, and it will show here as soon as it’s ready.
What discovery looks like

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Get updates when Penlog’s Discoverability Score or category rank changes.
Competing in ChatGPT Notes & Personal Knowledge Bases
View Category8 tools agents can invoke
Penlog ChatGPT Plugin FAQ
How the directory, categories and Discoverability Score work.
Read the methodologyHow do I improve Penlog's ChatGPT Plugin discoverability?
The levers are the listing surface agents actually read: names, descriptions, keywords, tool metadata, and registry health. Which lever matters depends on where discovery breaks, which is what continuous measurement shows.
What are Penlog alternatives on ChatGPT?
As of 2026-11-02, Penlog competes with #memory, Agent KB, AINOTA, Albo, ARR Family, Atlavium, AudioPen, Banyan and 57 more in ChatGPT Notes & Personal Knowledge Bases, ranked by public Discoverability Score.
Where is this profile measured?
This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.